Electronic apparatus

Abstract

A flexible printed circuit board that electrically connects a main body and a rotary body to each other is twisted in advance through an angle that is a half of an angle of rotation through which the rotary body is rotated. One end of the flexible printed circuit board is fixed to the main body, and the other end thereof is fixed to the rotary body. The rotary body is rotated in a direction causing the twist of the flexible printed circuit board to diminish.

1. An electronic apparatus, comprising:
 a main body; 
 a rotary body horizontally pivoted to the main body via a shaft support and rotatable through a predetermined angle of rotation relatively to the main body; and 
 a flexible printed circuit board passing through the shaft support and having opposite ends, wherein: 
 the flexible printed circuit board is twisted in a first direction, in an intermediate portion thereof between the opposite ends, through an angle that is one half of the predetermined angle of rotation of the rotary body, and is fixed at the opposite ends thereof respectively to the main body and the rotary body; and 
 the rotary body is rotatable in a second direction, opposite to the first direction causing the twist of the flexible printed circuit board in the first direction to diminish. 
 
   
   
     2. The electronic apparatus according to  claim 1 , wherein the opposite ends of the flexible printed circuit board are oriented in a common direction. 
   
   
     3. The electronic apparatus according to  claim 1 , wherein the intermediate portion of the flexible printed circuit board is folded like a bellows, and the bellows-like portion is twisted. 
   
   
     4. The electronic apparatus according to  claim 1 , wherein the intermediate portion of the flexible printed circuit board is folded like a letter U. 
   
   
     5. The electronic apparatus according to  claim 1 , wherein the intermediate portion of the flexible printed circuit board is folded like a letter S. 
   
   
     6. The electronic apparatus, as recited in  claim 1 , wherein the rotary body is rotatable in a second direction, opposite to the first direction, to eliminate the twist in the first rotatable direction and is further rotatable in the second direction through an angle that is one half the predetermined angle of rotation, producing a twist therein in the second direction. 
   
   
     7. The electronic apparatus according to  claim 1 , wherein the predetermined angle of rotation of the rotary body is 180° or less. 
   
   
     8. The electronic apparatus according to  claim 7 , wherein the predetermined angle of rotation of the rotary body is 180°. 
   
   
     9. An electronic apparatus, comprising:
 a main body having a first main planar surface and first and second opposite end surfaces; 
 a rotary body having a first main planar surface and first and second opposite end surfaces, rotatably connected to the main body for rotation about an axis transverse to the respective first main planar surfaces of the main end rotary bodies, so as to maintain the respective first main surfaces thereof in parallel relationship, the rotary body being rotatable between a first position, in which the rotary body and the main body are in a first aligned relationship with the respective first and second opposite end surfaces thereof commonly disposed relative to the axis of rotation, to a second position in which the rotary body and main body are in a second aligned relationship in which the respective, first and second opposite end surfaces of the rotary body and main body are oppositely disposed, relative to the first relationship, and in which a portion of the rotary body extends beyond an end surface of the main body; and 
 a flexible printed circuit board having opposite ends respectively connected to the main body and the rotary body and having an intermediate portion extending therebetween and twisted by rotation of the rotary body from an intermediate position, relatively to the main body, to the first aligned relationship and oppositely twisted when the rotary body is rotated from the intermediate position to the second aligned relationship. 
 
   
   
     10. The electronic apparatus according to  claim 9 , wherein the opposite ends of the flexible printed circuit board are oriented in a common direction. 
   
   
     11. The electronic apparatus according to  claim 9 , wherein the intermediate portion of the flexible printed circuit board is folded like a bellows, and the bellows-like portion is twisted. 
   
   
     12. The electronic apparatus according to  claim 9 , wherein the intermediate portion of the flexible printed circuit board is folded like a letter U. 
   
   
     13. The electronic apparatus according to  claim 9 , wherein the intermediate portion of the flexible printed circuit board is folded like a letter S. 
   
   
     14. The electronic apparatus, as recited in  claim 9 , wherein the rotary body is
 rotatable in the second direction to eliminate the twist in the first rotatable direction and is further rotatable in the second direction through an angle that is one half the predetermined angle of rotation, producing a twist in the second rotatable direction. 
 
   
   
     15. The electronic apparatus according to  claim 9 , wherein an angle of rotation of the rotary body between the first and second aligned relationships is 180° or less. 
   
   
     16. The electronic apparatus according to  claim 15 , wherein the angle of rotation of the rotary body between the first and second aligned relationships is 180°.